Generate Rsa Key On 2960x
- October 2, 2015
- Posted by: Syed Shujaat
- Category: Cisco, Networking Solutions
- Generate Rsa Key On 2960x Internet
- Generate Rsa Key On 2960x Computer
- Generate Rsa Key On 2960x Iphone
- Generate Rsa Key On 2960x Keyboard
Generate Rsa Key On 2960x Internet
How do I find my SSH public key on Windows server? closed Ask Question. Does it have an SSH Key? I don't think they have one by default, you need to generate one before you can use it, for which it's easiest to install and use puttyGen (though there are alternatives). You can find your idrsa.pub which contains your key.
- Nov 13, 2012 Enable port security on the interface. (Optional) Set the maximum number of secure MAC addresses for the interface. The maximum number of secure MAC addresses that you can configure on a switch is set by the maximum number of available MAC addresses allowed in the system.
- How to create self-signed certificates An article by Fabio Semperboni Tutorial A digital certificate or identity certificate is an electronic document which uses a digital signature to bind a public key with an identity, information such as the name of a person or an organization, their address, and so forth.
Use this command to generate RSA key pairs for your Cisco device (such as a router). keys are generated in pairs–one public RSA key and one private RSA key.
If your router already has RSA keys when you issue this command, you will be warned and prompted to replace the existing keys with new keys.
NOTE: Before issuing this command, ensure that your router has a hostname and IP domain name configured (with the hostname and ipdomain-name commands).
You will be unable to complete the cryptokeygeneratersacommand without a hostname and IP domain name. (This situation is not true when you generate only a named key pair.)
Here are the steps to Enable SSH and Crypto Key setup : 2 config must requried for SSH
1 Setup Local VTY line User ID and password
router (Config) # Line VTY 0 15
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router (Config-line)# login local
router (Config-line)# Exit
!!! create local login ID/Pass
router (Config)# username [loginid] password [cisco]
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router (Config)# username loginid1 password cisco1
2. router (Config)# ip domain-name example.com
router (Config)# crypto key generate rsa
how many bits in the modulus [512] :1024
router (Config)# ip ssh version2
router (Config)# CTRL Z
Note | Secure Shell (SSH) may generate an additional RSA key pair if you generate a key pair on a router having no RSA keys. The additional key pair is used only by SSH and will have a name such as {router_FQDN }.server. For example, if a router name is “router1.cisco.com,” the key name is “router1.cisco.com.server.” |
This command is not saved in the router configuration; however, the RSA keys generated by this command are saved in the private configuration in NVRAM (which is never displayed to the user or backed up to another device) the next time the configuration is written to NVRAM.
Modulus Length
When you generate RSA keys, you will be prompted to enter a modulus length. The longer the modulus, the stronger the security. However, a longer modules take longer to generate (see the table below for sample times) and takes longer to use.
The size of Key Modulus range from 360 to 2048. Choosing modulus greater than 512 will take longer time.
Generate Rsa Key On 2960x Computer
| Router | 360 bits | 512 bits | 1024 bits | 2048 bits (maximum) |
|---|---|---|---|---|
| Cisco 2500 | 11 seconds | 20 seconds | 4 minutes, 38 seconds | More than 1 hour |
| Cisco 4700 | Less than 1 second | 1 second | 4 seconds | 50 seconds |
Cisco IOS software does not support a modulus greater than 4096 bits. A length of less than 512 bits is normally not recommended. In certain situations, the shorter modulus may not function properly with IKE, so we recommend using a minimum modulus of 2048 bits.
Generate Rsa Key On 2960x Iphone
Syntax Description : Optional Strings to embed with SSH Crypto key
| general-keys | (Optional) Specifies that a general-purpose key pair will be generated, which is the default. | ||
| usage-keys | (Optional) Specifies that two RSA special-usage key pairs, one encryption pair and one signature pair, will be generated. | ||
| signature | (Optional) Specifies that the RSA public key generated will be a signature special usage key. | ||
| encryption | (Optional) Specifies that the RSA public key generated will be an encryption special usage key. | ||
| labelkey-label | (Optional) Specifies the name that is used for an RSA key pair when they are being exported.If a key label is not specified, the fully qualified domain name (FQDN) of the router is used. | ||
| exportable | (Optional) Specifies that the RSA key pair can be exported to another Cisco device, such as a router. | ||
| modulusmodulus-size | (Optional) Specifies the IP size of the key modulus.By default, the modulus of a certification authority (CA) key is 1024 bits. The recommended modulus for a CA key is 2048 bits. The range of a CA key modulus is from 350 to 4096 bits.
| ||
| storagedevicename: | (Optional) Specifies the key storage location. The name of the storage device is followed by a colon (:). | ||
| redundancy | (Optional) Specifies that the key should be synchronized to the standby CA. | ||
| ondevicename: | (Optional) Specifies that the RSA key pair will be created on the specified device, including a Universal Serial Bus (USB) token, local disk, or NVRAM. The name of the device is followed by a colon (:).Keys created on a USB token must be 2048 bits or less. |
| Command | Description |
|---|---|
| copy | Copies any file from a source to a destination, use the copy command in privileged EXEC mode. |
| cryptokeystorage | Sets the default storage location for RSA key pairs. |
| debugcryptoengine | Displays debug messages about crypto engines. |
| hostname | Specifies or modifies the hostname for the network server. |
| ipdomain-name | Defines a default domain name to complete unqualified hostnames (names without a dotted-decimal domain name). |
| showcryptokeymypubkeyrsa | Displays the RSA public keys of your router. |
| show crypto pki certificates | Displays information about your PKI certificate, certification authority, and any registration authority certificates. |
Generate Rsa Key On 2960x Keyboard
I have two Cisco Catalyst 2960-S 48-port switches 'stacked' using the Cisco FlexStack module. Originally I had to set them up using 'Express Setup', which I absolutly hate from my limited use of it.
I configured hostnames, ip addresses, and made sure the stack was functioning properly. I tested by plugging in a laptop and making sure it could open an internet page and all was well. I configured each switch exactly the same with the exception (obviously) of the hostname and IP. I then powered them OFF and installed the stacking module and they auto-configured themselves..
Before:
Switch-A (192.168.10.3)
Switch-B (192.168.10.4)
After:
Switch-A (192.168.10.3) Master 1
Switch-B Member 2
What I need and want to do now is setup remote access. If I have to go connect up with a console cable to configure that's fine, but I'm not sure if I need to..
If I open PuTTY and use Telnet to connect it states 'password required, but none set' and the PuTTY window closes.
If I open PuTTY and use SSH to connect it prompts me 'login as:'
If I press enter (@192.168.10.3's password:) it proceeds to prompt me for a password, which entering the password I used to setup the switch I receive 'access denied'.
I know I didn't configure SSH or Telnet for that matter when I initially set these up. I want to fix that now.
I want SSH (v2) enabled and I want to disable Telnet.
Any suggestions?